88 lines
3.0 KiB
Swift
88 lines
3.0 KiB
Swift
 
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//
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// PlayDate.swift
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// Swift bindings to the Playdate C API.
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//
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// The C API is delivered as a `PlaydateAPI` struct of function pointers that
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// the firmware hands to the game's `eventHandler` entry point. Call
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// `Playdate.initialize(with:)` from that entry point before using any other
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// API in this module.
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//
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public import CPlaydate
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public enum Playdate {
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/// The raw C API. Populated by `initialize(with:)`.
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///
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/// Access is unsynchronized: the Playdate runtime is single-threaded and
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/// the API pointer is written exactly once at startup.
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public internal(set) nonisolated(unsafe) static var api: PlaydateAPI!
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/// The raw C API pointer handed to `initialize(with:)`, for calls that
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/// need to pass the `PlaydateAPI*` back to C.
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public internal(set) nonisolated(unsafe) static var apiPointer: UnsafeMutablePointer<PlaydateAPI>!
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/// Stores the API pointer handed to the game's `eventHandler`.
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///
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/// Call this first, on the `.initialize` event, before using any other
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/// wrapper in this module.
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public static func initialize(with pointer: UnsafeMutableRawPointer) {
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apiPointer = pointer.assumingMemoryBound(to: PlaydateAPI.self)
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api = apiPointer.pointee
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}
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/// An error reported by the Playdate OS.
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public struct Error: Swift.Error, Sendable {
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public let message: String
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init(message: String) {
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self.message = message
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}
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init(cString: UnsafePointer<CChar>?) {
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self.init(message: String(playdateCString: cString) ?? "unknown error")
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}
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}
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/// The user's answer to a permission request (microphone, network).
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public enum AccessReply: UInt32, Sendable {
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case ask = 0
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case deny = 1
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case allow = 2
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}
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/// A Swift view of `PDSystemEvent` with the key code folded into the
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/// key events.
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public enum SystemEvent {
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case initialize
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case initializeLua
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case lock
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case unlock
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case pause
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case resume
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case terminate
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case keyPressed(keyCode: UInt32)
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case keyReleased(keyCode: UInt32)
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case lowPower
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case mirrorStarted
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case mirrorEnded
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public init?(event: PDSystemEvent, argument: UInt32) {
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switch event {
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case kEventInit: self = .initialize
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case kEventInitLua: self = .initializeLua
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case kEventLock: self = .lock
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case kEventUnlock: self = .unlock
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case kEventPause: self = .pause
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case kEventResume: self = .resume
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case kEventTerminate: self = .terminate
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case kEventKeyPressed: self = .keyPressed(keyCode: argument)
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case kEventKeyReleased: self = .keyReleased(keyCode: argument)
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case kEventLowPower: self = .lowPower
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case kEventMirrorStarted: self = .mirrorStarted
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case kEventMirrorEnded: self = .mirrorEnded
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default: return nil
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}
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}
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}
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}
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